Vachel Lindsay was an American poet responsible for pioneering modern singing poetry. His most famous work is "The Congo" which clearly exhibits his focus on sound in his poetry, using onomotopeia to imitate the pounding drums and chants of Congo's indigenous people.
“They tried to get me—I got them first!”
“I am unjust, but I can strive for justice. My life's unkind, but I can vote for kindness. I, the unloving, say life should be lovely. I, that am blind, cry out against my blindness.”
“Except the Christ be born again tonightIn dreams of all men, saints and sons of shame,The world will never see his kingdom bright.”
“We left you there, lonely,Beauty your power,Wisdom your watchman,To hold the clay tower.from 'The Tale of the Tiger Tree”